The first thing I tried was to change the password (iPhone 4 4.3.3) after jailbreaking but the MobileTerminal crashes upon launch. Same story after a phone restart.
Edit: Figured out the problem. Looks like the MobileTerminal in the CYdia repo doesn't work for iOS 4.0 onwards. The following is a working version from the author of the app:
I've got a 3gs with an old tethering crack on it, and am considering upgrading to 4.3.3 to get this jailbreak. How can I be sure that this will work for me, and how do I go about tethering afterwards? Googling only seems to turn up some app that I have to buy from some other store (a cydia store?). Is it more complicated than the help.benm.at tethering hack that I used?
Visited the site with my iPhone. Pressed Install. No confirmation or anything.
Now I have a Cydia app on my phone that I can move but not delete. Was that all it took to jailbreak my phone? (It took like 10 seconds)